UA 2330 then AA 6238 at DFW
Newark → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:21UA 2330 from Newark at the gate
08:25AA 6238 to Amarillo leaves the gate
16 h 04 apart on the timetable, overnight
AA 6238 leaves 16 h 04 after UA 2330 arrives on the timetable: more than half a day, so not a connection we count.